• O-shaped plaything combines two canine favorites, the squeaker toy and the tennis ball
• Made in the USA from durable, high-quality tennis-ball material
• Hidden squeaker; felt covering won't abrade dogs' teeth
• Measures 6-1/2 inches in diameter

Large donut, 6.5". If your pets love tennis balls, they will go insane over the rugged Air Dog Jack Toy. This fetch, float, fun, play, run, and smile toy never bounces the same way twice. Brightly colored toy is great in the snow or at the beach.

Squeaker toys and tennis balls: two canine favorites, brought together at last. Tailor-made for games of chase and fetch, this toy conceals an irresistible squeaker inside. The round shape has a silly, unpredictable bounce, and it's great for extended games of tug, with humans or other dogs. It even floats, for hours of retrieving fun (and training) by land or by sea. The Air Kong squeaker doughnut is made in the USA from durable, high-quality tennis-ball material. Unlike typical tennis balls, however, the non-toxic felt covering on an Air Kong is specially designed not to wear down dogs' teeth as they play. The large doughnut measures 6-1/2 inches in diameter and is ideal for larger breeds--or smaller ones who like to tug with the big dogs. --Mary Park

First of all, This is not a product for powerfull chewers.
But if you use it under supervision and get your dog to interest in it and its sound, it'll become in your dog's favorite.
My Border Collie used to loose all his tennis balls and he used to hide'em from me. This toy is allmost impossible to hide for it's color, it's size and shape. Also the squeaker seems to be resistent.